Home Postcodes by state SA 5472 Postcode 5472 5472 is the postcode for Georgetown, SA. Localities with postcode 5472GeorgetownSA Postcode 5472 State or territory South Australia (SA) Localities 1 Council area Northern Areas Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5471 · Postcode 5473